Spring feeler finger



e. M. ARRAGG.

SPRING FEELER FINGER. v APPLICATION FILED APR. 8; 1920. 1,412,595. v Pafent d Apr- 11, 1922.

3 5HEETSSHEET I E 211 Inven f0]:

fi /zw G. M. ARRAGG.

SPRING FEELEH FINGER.

APPLICATION FILED APR. 8, 1920.

1,41 2,595. atented Apr. 11, 1922.

3 SHEET$-SHEET Z- I li 37 21 a) o a k a? 34, 33 i-7 715 .2 8 A w 7 y 43%;; 42

e. M. ARRAGG.

SPRING FEELER FINGER.

APPLICATION FILED APR. 8, I920.

1,41 2,595. w Patented Apr. 11, 1922.

3 SHEETS-SHEET 3.

' Inve ni'on UNITED STATES PATENT OFFICE.

G EORGE M. ARBAGG, 0; LAWRENCE, MASSACHUSETTS.

SPRING FEELER FINGER.

' I Application filed April 8,

To all whom it may concern.-

Be it known that 1, (license M. ilRRAGG, a citizen of Syria, residing at Lawrence, in the county of Essex and State oi? lvlassachusetts, have invented certain new and useful Improvements in Spring Feeler llingers, ol which the following is a specification.

This invention relates to what are known as teeler fingers such as are used in connection with spinning and twisting frames for roving and yarn.

Such fingers'have an eye at their tree end through w iich the yarn passes, the "friction "of the passage of the yarn and the pull oi the yarn more or less moving the finger out 01 its natural position. When a break occurs, or in some cases when a lump passes, the finger is 'moved abnormally and such movement operates stopping mechanism or alarm mechanism.

The ditficulty in the operation of such fingers is that the friction or pull of the yarn 's very slight, and it is necess that such fingers should therefore be very sensitive. At thesame time, on account of the jarring t the machinery, i equalities in the yarn, etc, it is necessary that such fingers should he steady and should not begin, to pound or I bounce.

My invention is a rocking or elastic teeler finger, and is more specifically such a feeler finger having a guide eye between a bobbin and a yarn guide on a spinning or twisting frame for roving or yarn.

Preferably, the guide eye is located between a bobbin and yarn guiding means but not in direct line therewith.

My construction may be regarded as sub stan'tially a shock absorber to take up jars and inequalities whereby the feeling funcion is sensitively and steadily performed.

In the drawings, Fig. l is a side elevation of parts of a worsted cap spinning frame such as shown in patent to George M. Arragg, No. 1.168457, January 18, 1916, with my preferred form of rocking member, t'eeler finger. and guide eye in'position.

Fig. 2 is a side elevation. and Fig. 3 a plan view of my preferred form of guide eye and teeler finger. I

Fig.4 is a side elevation ot. a rocking mem- 381' with another form of feeler finger and guide eye.

Fig. 5 is a side elevation of another form Specification of Letters Patent.

Patented Apr. 11, 1922.

1920. Serial No. 372,219.

of rocking member, finger and guide eye, and Figs 6 and T are similar side elevations of other forms of rocking members, teeler fingers and guide eyes.

8 shows my type of feeler finger attached to the stop-motion shown in patent to George M. Arragg, No. 1,168,457 of J an. 18,1916.

Fig. 9 is a side elevation showing my form oi feeler finger attached to the rocking member, shown in patent to Channing Whittaker, No. 753,338, of March 1, 1904.

Fig. 10 is a diagrammatic side elevation of a modified form of ieeler finger attached to another type of electric stop-motion.

Fig. 11 is a detail side elevation of a modification of the form of ieeler finger shown i in Fig. 10.

In toe construction shown in Fig. 1, A represents the rail, part of the frame of a w rsted cap spinnin, frame, B is the bobbin. C, C are the front drawing rolls, 10 are the idler rolls, 11 the bottom back drawing roll, and 12 the top back drawing roll which, as shown in patent to Arragg No. 1,168,457 of Jan. 18, 1916, is separable 'l'lOIIi the bottom back drawing roll 11 by means of the litter 13 actuated by mechanism, indicated gen erally by M, adapted to separate the back drawing rolls when set in operation by power driven means shown as a vibrator V which as shown in said Fig. 1, causes the mechanism M to separate the back drawing rolls when the rocking member R, pivoted to frame A at 20, is relieved from the pull of the yarn Y by reason of a break or otherwise, and drops to the dotted line position in front of power driven vibrator V. S is a stop to limit the movement of rocking member R.

The back part 21 of the rocking member R is shown as being made of a stiff wire or rod, and the front part F is shown as a flatbid tached beyond said cut away part one lip 23 of a guide plate, the other lip 21- being separated from F so that the yarn can slip underneath into cut away part 22 through the slot 26 between the two lips.

This guide plate serves as a slub catcher and to prevent the whiskers or ends of fibre in the roving oryarn from winding around the eye and thus causing trouble.

This guide plate is shown as made of metal, with a porcelain eye 25 having a side slot integral with slot 26 and extending down through lip 24 but not beyond it, as it is necessary to leave a space between lip 24; and spring F for the yarn to be threaded.

Fig. at shows a rocking member R having a pivot block 30 with pivot hole 31, a substantially rigid ba ck part 21 and a front part forming the elastic feeler finger 29 of round spring metal which is turned into a pigtail 32 which serves as a guide eye.

In Fig. 5, the rocking member R is pivoted to a part of the frame A at and has a substantially rigid back part 21 and a substantially rigid front part or feeler finger which terminates in a pigtail guide eye 35. Associated with the finger is the spring 36 suitably attached to frame A in such manner that it tends to depress the back part 21 away from stop Sand lift the rocking feeler finger at the front.

As shown in Flg. 6, instead of the spring 36,1 may use the pad of rubber or other elastic'material 37 fastened under the pivotbrackets 38 insuch manner that it tends to depress the back part 21 in the same manner as spring 36.

In Fig. 7, the rocking member It is pivoted to the frame A at 10 and has a substantially rigid back part 21 and a substantially rigid 7 front part 11 extending out partway but terminating in an elastic member 42which ends in a 'pigtail eye 43, the combination of 11 and 42 forming an elastic feeler finger with an elastic element associated therewith.

In Fig. 8, I show my elastic feeler finger I applied to the stop-motion such as shown in patent to Arragg, No. 1,168,457 of Jan. 18, 1916. I I

In this view, 50 represents theframe, B the bobbin, (l, C front drawing rolls, 51, 51 back drawing rolls, 52 a rocking member, 53 power means for actuating the stop-motion when rocking member 52, falls back to the dottec line position shown in F 8.

My elastic feeler finger 5 1; is shown as a strip of spring steel attached to the rocking member at and terminating in any suitable type of guide eye 56. I also show adjust able ,weight 57 carried by feeler finger 54 whereby the parts may be balanced properly. In this view, as in Fig. 1, the dotted lines show he position which the feeler finger would assume, and will assume, when the yarn is not passing through the guide eye.

I through 71, 73, 7 1,

In Fig. 9, I show my elastic feeler finger attached to the stop-motion for twisting frame shown in patent to'Channing WVhittaker, No. 753,338, March 1, 19041. In this view, 60 represents the frame, B the bobbin, Y the yarn, 61 the yarn guiding means, and 62 a rocking member pivoted to the frame at 63. It is not necessary to describe any of the parts of this device as they are old and well known except my feeler finger 64. This is shown as a flat strip of spring metal fastened to the rocking member 62 at 65 and terminating in eye E of the same type as that shown in Fig. 1. The yarn in this case is shown as bent at almost a right angle between the yarn guiding means 61 andv the bobbin B.

In Fig. 10, I show the application of my feeler finger to an electrically operable stop motion, in which C, C are the front drawing rolls, 11, bottom back drawing roll, and 12 the top back roll, while A is the rail, part of the frame, B is the bobbin and Y is the yarn.

My feeler finger has no tail, but has guide eye E and is formed of a strip of spring steel held to rail A by means of a bolt 71 which passes through suitable insulation 72 and is fastened by means of a bolt 7 8.

From 7 3there is an electric connection 74 into the battery 7 5, and from there an electrical connection 76 to a solenoid T in which travels an armature 77 which terminates at 78 at a point below, beyond and between rolls 11 and 12 out of contact with yarn Y.- The parts are so arranged that when the currentpasses through solenoid T, armature 77 is forcedout to the dotted line position, lifting top back roll 12 as shown.

The circuit is made by means of the wire 79 on the solenoid to the contact 80 insulated at 81 and carried by means of an arm 82 by a lifter rod 83 which is shown as having an adjustable knurled nut 8 f which serves as a stop to limit the downward movement of finger 70.

s rin rises. makin a contact with 80. thence 5, 76, S and 79, complet ing the circuit.

lVhen it isdesired to doff without actuatingthe stop-motion, rod 83 is turned, bring ing Set to the dotted.positionwhereby 80 and 81 move back tothe dotted line position out of the way of the feeler finger when the tension of the yarn onit ceases and it rises up.

While it is preferable that my feeler. finger should be pivoted. I can, as shown in Fig. 11, use a finger 90 which rests on the insulation 72 and is'loose between such insulation and the head of bolt 71.

This finger 90 is shown as made of strip metal with a U spring 91insulated at 92. fastened to railA by screw 93.

Itwill be understood that while I prefer to use a feeler finger'inade of spring metal,

1'. In a spinning frame having front drawing rolls, one or more bobbins and separable back drawing rolls, the combination of a rocking member pivoted to the frame, the front part including a finger havlng a spring shank with a free end, a gulde eye r dby the free end of said shank between the front rolls and a bobbin at a point in front of a] direct line therebetween whereby the yarn forms an obtuse angle between the front rolls and. the bobbin with its apex at the guide eye,'a guard plate which extends outward from said guide eye having two lips forming a slot open at one end -;wh ich extends oversaid shank, one lip being attached to said shank and the other lip being separated therefrom, the back part of the rocking member extending back of the pivot, such rocking member being adapted to rock inv a verticalplane, and a stop to limit movement of the rock ng member in a vertical plane, with mechanism adapted to separate the back drawing rolls, and power driven means operative by the action of the rocking member for causing such mechanism to separate the back rolls.

2. In a spinning frame having front drawing rolls, one or more bobbins and separable back drawing rolls, the combination of a rocking member pivoted to the frame, the

front part including a finger having a shank with a .free end, a guide eye carried by the free end of said shank between the front rolls and a bobbin, at a point in front of a direct line therebetween whereby the yarn forms an obtuse angle between the front rolls and the bobbin with its apex at the guide eye, a guard plate which extends outward from said guide eye having two lips forming a slot open at one end which extends over said shank, one lip being attached to said shank and the other lip being separated therefrom, the back part of the rock ing member extending back of the pivot, such rocking member being adapted to rock 7 in a vertical plane, an elastic element so associated with each rocking member as to maintain each eye in yielding contact with the roving or yarn, and a stop to limit movement of the rocking member in a vertical plane, with means operative by the pivotal motion of the rocking member to separate the, back drawing rolls.

3. In a spinning frame having front drawing rolls, one or more bobbins and sepa- 6 rable back drawing rolls, the combination of a rocking member pivoted to the frame, the front part including a finger having a shank with a free end, a guide eye carried by the free end of said shank between the front rolls and a bobbin, at a point in front member extending back of the pivot, such rocking member being adapted to rock in a vertical plane, an elastic element so associated with each rocking member as to maintain each eye in yielding contact with the roving or yarn, and a stop to limit movement of the rocking member in a vertical plane, with means operative by the pivotal motion of the rocking member to separate the back drawing rolls.

4. In a spinning frame having front drawing rolls, a bobbin, and separable back drawing rolls, the combination of a rocking member pivoted to the frame, the front part being a finger having a spring shank with a free end, a guide eye carried by the free end of said shank between the front drawing rolls and a bobbin, at a point in front of a direct line therebetween whereby the yarn forms an obtuse angle between the front rolls and the bobbin with its apex at the guide eye, and the back part extending back of the pivot, such rocking member being adapted to rock in a vertical plane, a stop to limit movement in the vertical plane, with mechanism adapted to separate the back drawing rolls,and power driven means operative by the action of the rocking member for causing such mechanism to separate the back rolls. I

5. The combination with a spinning frame having front delivery rolls and bobbins, of spring fingers pivoted to said frame, each extending out between said rolls and a bobbin, stops to limit the movement of said fingers, a guide eye carried by each finger between said rolls and a bobbin, at a pointin front of a direct line therebetween whereby the yarn forms an obtuse angle between the front rolls and the bobbin with its apex at the guide eye, a guard plate which extends outward from each eye, and means operative by the pivotal motion of said fingers to stop delivery of yarn or roving to said delivery rolls.

6. The combination with a spinning frame having front delivery rolls and bobbins, of spring fingers attached to said frame, each extending out between said rolls and a bobbin, stops to limit the movement of said fingers, a guide eye carried by each finger between said rolls and a bobbin, at a point in front a direct line therebetween whereby the yarn forms an obtuse angle between the front rolls and the bobbin with its apex at the guide eye, and means operative by the motion of said fingers to stop delivery of yarn or roving to said delivery rolls.

7. The combination with a spinning or twisting frame having front delivery rolls and bobbins, of fingers pivoted to said frame each extending out between said rolls and a bobbin, a stop to limit the movement of each finger, a guide eye carried by each finger between said rolls and a bobbin, at a point in front of a direct line therebetween whereby the yarn forms an obtuse angle be tween the-front rolls and the bobbin with its apex at the guide eye, and an elastic element so associated with each finger as to absorb shocks caused by the pull of the roving.

' 8. The combination with aspinning or twisting frame having front delivery rolls and bobbins, of fingers attached to said frame each extending out between said rolls and a bobbin, a stop to limit the movement of each finger, a guide eye carried by each finger between said rolls and a bobbin, at a point in front of a direct line therebetween whereby th'e'yarn forms an obtuse angle between the front rolls and the bobbin with its apex at the guide eye, and an elastic element so associated with each finger as to maintain each eye in yielding contact with the roving or yarn. 7

9. The combination with a spinning or twisting frame having front delivery rolls and bobbins, of fingers attached to said frame each extending out between said rolls and a bobbin, a guide eye carried by each finger between said rollsand a bobbin, at a point in front of a direct line therebetween whereby the yarn forms an obtuse angle between the front rolls and the bobbin with its apex at the guideeye, and an elastic element so associated with each finger as-to' yielding contact with said bobbin and said yarn guiding means, at

a point in frontof a direct line therebetween whereby the yarn forms an obtuse angle between the yarn guiding means and the bobbin with its apex at the'guide eye, and an elastic element so associated witlrsaid finger as to maintain the eye in yielding contact with the roving or yarn.

11. The combination with a spinning or twisting frame having abobbin, and means for guiding yarn to said bobbin, of a finger attached to said frame having a free end extending out between said bobbin and said yarn guiding means, a guide eye carried by the free end of said finger between said bobbin and said yarn guiding means but not in direct line therewith, and an elastic element so associated with said finger as to maintain the eye in yielding contact with the roving or yarn, whereby the yarn between said bobbin and yarn guiding means forms an obtuse angle with the apex at such guide eye.

In testimony whereof I have affixed my signature.

GEORGE M. RRAeeQ 

